Clean-room design is the method of copying a design by reverse engineering and then recreating it without infringing any of the copyrights associated with the original design. Clean-room design is useful as a defense against copyright infringement because it relies on independent creation. However, because independent invention is not a defense against patents, clean-room designs typically cannot be used to circumvent patent restrictions.
MAME is a free and open-source emulator designed to recreate the hardware of arcade game systems in software on modern personal computers and other platforms. Its intention is to preserve gaming history by preventing vintage games from being lost or forgotten. It does this by emulating the inner workings of the emulated arcade machines; the ability to actually play the games is considered "a nice side effect". Joystiq has listed MAME as an application that every Windows and Mac gamer should have.
bnetd is a communication app that enables users of the online game StarCraft released on March 31, 1998 to connect and chat together. Bnetd was released on April 28, 1998 under the name StarHack and provided near-complete emulation of the original online multiplayer gaming service network. This was accomplished through reverse engineering of the corporate Blizzard Entertainment's Battle.net.
A modchip is a small electronic device used to alter or disable artificial restrictions of computers or entertainment devices. Modchips are mainly used in video game consoles, but also in some DVD or Blu-ray players. They introduce various modifications to its host system's function, including the circumvention of region coding, digital rights management, and copy protection checks for the purpose of using media intended for other markets, copied media, or unlicensed third-party (homebrew) software.
The Virtual Game Station was an emulator by Connectix that allows Sony PlayStation games to be played on a desktop computer. It was first released for the Macintosh, in 1999, after being previewed at Macworld/iWorld the same year by Steve Jobs and Phil Schiller. VGS was created by Aaron Giles. The recompiling CPU emulator was written by Eric Traut.
Bleem! is a commercial PlayStation emulator released by the Bleem! Company in 1999 for IBM-compatible PCs and Dreamcast. It is notable for being one of the few commercial software emulators to be aggressively marketed during the emulated console's lifetime, and was the center of multiple controversial lawsuits.
Limitations on exclusive rights: Computer programs is the title of the current form of section 117 of the U.S. Copyright Act. In United States copyright law, it provides users with certain adaptation rights for computer software that they own.
Software copyright is the application of copyright in law to machine-readable software. While many of the legal principles and policy debates concerning software copyright have close parallels in other domains of copyright law, there are a number of distinctive issues that arise with software. This article primarily focuses on topics particular to software.
Connectix Corporation was a software and hardware company, noted for having released innovative products that were either made obsolete as Apple Computer incorporated the ideas into system software, or were sold to other companies once they became popular. It was formed in October 1988 by Jon Garber; dominant board members and co-founders were Garber, Bonnie Fought, and close friend Roy McDonald. McDonald was still Chief Executive Officer and president when Connectix finally closed in August 2003.
Homebrew, when applied to video games, refers to games produced by hobbyists for proprietary video game consoles which are not intended to be user-programmable. The official documentation is often only available to licensed developers, and these systems may use storage formats that make distribution difficult, such as ROM cartridges or encrypted CD-ROMs. Many consoles have hardware restrictions to prevent unauthorized development.
PlayStation Portable homebrew refers to the process of using exploits and hacks to execute unsigned code on the PlayStation Portable (PSP).
A video game console emulator is a type of emulator that allows a computing device to emulate a video game console's hardware and play its games on the emulating platform. More often than not, emulators carry additional features that surpass limitations of the original hardware, such as broader controller compatibility, timescale control, easier access to memory modifications, and unlocking of gameplay features. Emulators are also a useful tool in the development process of homebrew demos and the creation of new games for older, discontinued, or rare consoles.
Lewis Galoob Toys, Inc. v. Nintendo of America, Inc. is a 1992 legal case where the United States Court of Appeals for the Ninth Circuit concluded that there was no copyright infringement made by the Game Genie, a video game accessory that could alter the output of games for the Nintendo Entertainment System. The court determined that Galoob's Game Genie did not violate Nintendo's exclusive right to make derivative works of their games, because the Game Genie did not create a new permanent work. The court also found that the alterations produced by the Game Genie qualified as non-commercial fair use, and none of the alterations were supplanting demand for Nintendo's games.
Reverse engineering is a process or method through which one attempts to understand through deductive reasoning how a previously made device, process, system, or piece of software accomplishes a task with very little insight into exactly how it does so. Depending on the system under consideration and the technologies employed, the knowledge gained during reverse engineering can help with repurposing obsolete objects, doing security analysis, or learning how something works.
Sony Corp. of America v. Universal City Studios, Inc., 464 U.S. 417 (1984), also known as the "Betamax case", is a decision by the Supreme Court of the United States which ruled that the making of individual copies of complete television shows for purposes of time shifting does not constitute copyright infringement, but can instead be defended as fair use. The court also ruled that the manufacturers of home video recording devices, such as Betamax or other VCRs, cannot be liable for contributory infringement. The case was a boon to the home video market, as it created a legal safe harbor for the technology.
In computing, an emulator is hardware or software that enables one computer system to behave like another computer system. An emulator typically enables the host system to run software or use peripheral devices designed for the guest system. Emulation refers to the ability of a computer program in an electronic device to emulate another program or device.
Sega Enterprises Ltd. v. Accolade, Inc., 977 F.2d 1510, is a case in which the United States Court of Appeals for the Ninth Circuit applied American intellectual property law to the reverse engineering of computer software. Stemming from the publishing of several Sega Genesis games by video game publisher Accolade, which had disassembled Genesis software in order to publish games without being licensed by Sega, the case involved several overlapping issues, including the scope of copyright, permissible uses for trademarks, and the scope of the fair use doctrine for computer code.
Fox Broadcasting Co. v. Dish Network, LLC is a copyright case in which the United States District Court for the Central District of California, by granting partial summary judgment, denied most parts of the copyright claims presented by Fox Broadcasting Company (Fox) against Dish Network (Dish) for its service, a DVR-like device that allowed users to record programming that could be accessed later through any Internet-connected device. The service offered by Dish also allowed users to record any or all Fox's prime-time programs and to automatically skips commercials (AutoHop).
Atari Games Corp. v. Nintendo of America Inc., 975 F.2d 832, is a U.S. legal case in which Atari Games engaged in copyright infringement by copying Nintendo's lock-out system, the 10NES. The 10NES was designed to prevent Nintendo's video game console, the Nintendo Entertainment System (NES), from playing unauthorized game cartridges. Atari, after unsuccessful attempts to reverse engineer the lock-out system, obtained an unauthorized copy of the source code from the United States Copyright Office and used it to create its 10NES replica, the Rabbit. Atari then sued Nintendo for unfair competition and copyright misuse, and Nintendo responded that Atari had engaged in unfair competition, copyright infringement, and patent infringement.
Video game preservation is a form of preservation applied to the video game industry that includes, but is not limited to, digital preservation. Such preservation efforts include archiving development source code and art assets, digital copies of video games, emulation of video game hardware, maintenance and preservation of specialized video game hardware such as arcade games and video game consoles, and digitization of print video game magazines and books prior to the Digital Revolution.
